[DeTomaso] Tapered ring compressor

Mike Drew MikeLDrew at aol.com
Wed Jul 5 12:02:03 EDT 2017 

It's the actual tube that twists about 90 degrees....

Mike

Sent from my iPad

> On Jul 5, 2017, at 08:55, Ken Green <kenn_green at yahoo.com> wrote:
> 
> Do you mean the U-joints very slightly twist or the half shafts?  I can imaging a solid axle twisting a little without breaking, but it's hard to imagine a tubular axel twisting without being compromised?
> 
> Ken
> 
> 
> From: Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
> To: Will Kooiman <will.kooiman at gmail.com> 
> Cc: detomaso at detomasolist.com
> Sent: Tuesday, July 4, 2017 9:42 PM
> Subject: Re: [DeTomaso] Tapered ring compressor
> 
> Fwiw Dennis Quella told me a story years ago. He builds ZF gearboxes for owners of Wells Coyote hill climb cars for Pikes Peak. He told me they use stock Pantera driveshafts, and they twist under all the power, so after they twist they flip them side to side, and the next run un-twists them!
> 
> Mike
> 
> Sent from my iPad
> 
> > On Jul 4, 2017, at 21:30, Will Kooiman <will.kooiman at gmail.com> wrote:
> > 
> > Jack - my Cobra halfshafts are not cut and re-welded.  They appear to be
> > forged.  They are solid, 1.25”.  They have the original Jag part numbers,
> > and I even found some on ebay less than 10 miles from my house.  But I
> > don’t want to replace the half-shafts with another pair that will also
> > twist.
> > 
> > BTW, it doesn’t shake, shimmy, or do anything weird, even with the shaft
> > twisted a bit.  It’s currently smooth as butter.
> > 
> > As I understand it, it is pretty common for drag racers to twist axles.  I
> > don’t know if they still do it these days with super strong axles, but I
> > heard they used to paint a line down the axles so they could see how far
> > they had twisted.  I don’t have to do that, since each end has a U-joint
> > that doesn’t move, so it’s pretty obvious when they twist.
> > 
> > I plan on having half shafts made in 2.5” tube.  That’s about as big as I
> > can go w/out moving the springs out.  But that’s a project in the future.
> > I have a few others in front of it.
> > 
> >> On 7/2/17, 9:11 AM, "Joseph F. Byrd, Jr." <byrdjf at embarqmail.com> wrote:
> >> 
> >> My Lord!
> >> 
> >> Is that something that happens with Jag half shafts?
> >> 
> >> I would think you should also be feeling a weird vibration, not only from
> >> the expectation the twist threw the shaft out of balance, But more so from
> >> the u joints being out of phase.  I wonder if that might be
> >> pushing/pulling
> >> once per revolution on the bearings and the seal was the FIRST to suffer.
> >> 
> >> -----Original Message-----
> >> From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
> >> Of Will Kooiman
> >> Sent: Sunday, July 02, 2017 1:21 AM
> >> To: Ken Green; Thomas Törnblom
> >> Cc: Detomaso Email List
> >> Subject: Re: [DeTomaso] Tapered ring compressor
> >> 
> >> ...The squealing was the seal race....and was rotating where it wasn¹t
> >> supposed to rotate.
> >> 
> >> ...the half shafts had twisted about 30 degrees....
> >> 
> >> 
> > 
> > 
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> > 
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> 
> 
> _______________________________________________
> 
> 
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> 
-------------- next part --------------
   It's the actual tube that twists about 90 degrees....

   Mike
   Sent from my iPad

   On Jul 5, 2017, at 08:55, Ken Green <[1]kenn_green at yahoo.com> wrote:

   Do you mean the U-joints very slightly twist or the half shafts?  I can
   imaging a solid axle twisting a little without breaking, but it's hard
   to imagine a tubular axel twisting without being compromised?
   Ken
     __________________________________________________________________

   From: Mike Drew via DeTomaso <[2]detomaso at server.detomasolist.com>
   To: Will Kooiman <[3]will.kooiman at gmail.com>
   Cc: [4]detomaso at detomasolist.com
   Sent: Tuesday, July 4, 2017 9:42 PM
   Subject: Re: [DeTomaso] Tapered ring compressor
   Fwiw Dennis Quella told me a story years ago. He builds ZF gearboxes
   for owners of Wells Coyote hill climb cars for Pikes Peak. He told me
   they use stock Pantera driveshafts, and they twist under all the power,
   so after they twist they flip them side to side, and the next run
   un-twists them!
   Mike
   Sent from my iPad
   > On Jul 4, 2017, at 21:30, Will Kooiman <[5]will.kooiman at gmail.com>
   wrote:
   >
   > Jack - my Cobra halfshafts are not cut and re-welded.  They appear to
   be
   > forged.  They are solid, 1.25".  They have the original Jag part
   numbers,
   > and I even found some on ebay less than 10 miles from my house.  But
   I
   > don't want to replace the half-shafts with another pair that will
   also
   > twist.
   >
   > BTW, it doesn't shake, shimmy, or do anything weird, even with the
   shaft
   > twisted a bit.  It's currently smooth as butter.
   >
   > As I understand it, it is pretty common for drag racers to twist
   axles.  I
   > don't know if they still do it these days with super strong axles,
   but I
   > heard they used to paint a line down the axles so they could see how
   far
   > they had twisted.  I don't have to do that, since each end has a
   U-joint
   > that doesn't move, so it's pretty obvious when they twist.
   >
   > I plan on having half shafts made in 2.5" tube.  That's about as big
   as I
   > can go w/out moving the springs out.  But that's a project in the
   future.
   > I have a few others in front of it.
   >
   >> On 7/2/17, 9:11 AM, "Joseph F. Byrd, Jr." <[6]byrdjf at embarqmail.com>
   wrote:
   >>
   >> My Lord!
   >>
   >> Is that something that happens with Jag half shafts?
   >>
   >> I would think you should also be feeling a weird vibration, not only
   from
   >> the expectation the twist threw the shaft out of balance, But more
   so from
   >> the u joints being out of phase.  I wonder if that might be
   >> pushing/pulling
   >> once per revolution on the bearings and the seal was the FIRST to
   suffer.
   >>
   >> -----Original Message-----
   >> From: DeTomaso [mailto:[7]detomaso-bounces at server.detomasolist.com]
   On Behalf
   >> Of Will Kooiman
   >> Sent: Sunday, July 02, 2017 1:21 AM
   >> To: Ken Green; Thomas Toernblom
   >> Cc: Detomaso Email List
   >> Subject: Re: [DeTomaso] Tapered ring compressor
   >>
   >> ...The squealing was the seal race....and was rotating where it
   wasn^1t
   >> supposed to rotate.
   >>
   >> ...the half shafts had twisted about 30 degrees....
   >>
   >>
   >
   >
   > _______________________________________________
   >
   >
   > Detomaso Email List is not managed by POCA
   > Posted emails must not exceed 1.5 Megabytes
   > DeTomaso mailing list
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   >
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   use the links above.
   >
   > Members who post to this list grant license to the list to forward
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   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.
   _______________________________________________
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References

   1. mailto:kenn_green at yahoo.com
   2. mailto:detomaso at server.detomasolist.com
   3. mailto:will.kooiman at gmail.com
   4. mailto:detomaso at detomasolist.com
   5. mailto:will.kooiman at gmail.com
   6. mailto:byrdjf at embarqmail.com
   7. mailto:detomaso-bounces at server.detomasolist.com
   8. mailto:DeTomaso at server.detomasolist.com
   9. http://server.detomasolist.com/mailman/listinfo/detomaso
  10. mailto:DeTomaso at server.detomasolist.com
  11. http://server.detomasolist.com/mailman/listinfo/detomaso

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